What is your Actual Fuel Efficiency?

This is a discussion on What is your Actual Fuel Efficiency? within The Indian Car Scene, part of the BHP India category; My 2010 fiat grand punto 1.3mjd 75bhp delivering this on Noida-Greater Noida expressway.
This run was purely for the sake ...

Observations in my vento 1.6 tdi during to and fro trip between villupuram and Coimbatore. 760 kms totally of which 60 kms in B2B traffic , 20 kms village roads , about 20 min idling and the remainder butter smooth 6 and 4 lanes with 2 lane roads interspersed for about 50 kms with moderate traffic( Saturday evening)
The to journey : highway speeds 95 -99 kmph ( never crossed 100) till Salem and 100- 105 kmph till Coimbatore outskirts. Very sedate drive (gentle acceleration )
The return journey :
105 kmph till Salem and 110 kmph ( almost constant speed) till villupuram (with quick acceleration after braking)City drive and speeds were same for both journeys.
The respective mileage for to and fro are 21.5 and 21.5 kmpl( noted at end of each trip).
Tankful calculations were 20.3 kmpl.
Overall running times were , 6 and 5.5 hours respectively.
Highway running times were 4.5 and 3.75 hours respectively.
I couldn't appreciate any overall mileage difference between driving at 95 -100 kmph and 100-105 kmph. The fluctuations in digital speedometer due to difference of pressure on accelerator were + or - 2 to 3 kmph.
On the other hand,speeds of 70 to 80 kmph gave mid figure of 27.3 kmpl over a 75 km trip in 4 lane highway.
So,I arrived at the following conclusions.
1. Speeds of 90 - 95 kmph warranted frequent braking( mainly to give way to cars) ,gearshifts which decreased FE.
2. Speeds of 120 kmph and above warranted even more frequent brakings and hit hard on FE.
3. Constant speeds of 100 to 105 kmph with coasting Gave excellent economy with smooth ride and also was less tiresome along with good average speeds and hence pretty decent running time.

My swift VDI trim has been modestly good in mileage terms. Seen it offer 29kmpl when driven at sedate 80 and 25kmpl with speeds between 90 to 120. Purely highway and speeds were when in total view of road with sparse traffic.

My office commute per day comes to 80 km and most of it is through rural roads with low speeds (50 - 60 kph) and less traffic / signals. I do try to be economical with the pedal inputs and aircon usage (set at 25 degrees, blower speed at 1).

Made a 550 km trip on last weekend and my ride gave a 15.6 kmpl[which I hope is a decent figure] on the Highway with 60-70% Highway cruising @ 80-100 kmph with occasional Sprints exceeding 120 kmph [not stating them explicitly fearing a Mods' Reprimand ] which I could not resist .

Next time, I'd see that the speed will be maintained in a FE way to see the '16 kmpl' mark

Quote:

Originally Posted by Dieseldunk

My swift VDI trim has been modestly good in mileage terms. Seen it offer 29kmpl when driven at sedate 80 and 25kmpl with speeds between 90 to 120. Purely highway and speeds were when in total view of road with sparse traffic.

Those are mind boggling numbers !

Every time I come across these kind of numbers, I just curse myself for not buying the DDiS instead of a G-series.

Having said that, a smile dangles on my face post every drive regardless of the duration- Manifestation of " Live to Drive"

Made a 550 km trip on last weekend and my ride gave a 15.6 kmpl[which I hope is a decent figure] on the Highway with 60-70% Highway cruising @ 80-100 kmph with occasional Sprints exceeding 120 kmph [not stating them explicitly fearing a Mods' Reprimand ￼ ] which I could not resist .

Next time, I'd see that the speed will be maintained in a FE way to see the '16 kmpl' mark

Those are mind boggling numbers !

Every time I come across these kind of numbers, I just curse myself for not buying the DDiS instead of a G-series.

Having said that, a smile dangles on my face post every drive regardless of the duration- Manifestation of " Live to Drive" ￼

Thanks mate. I am very sure all swift owners will be happy with the mileage and drive comfort.
Any way it is always not so high when you get into highways which are 2 way or cluttered.